From what ive been reading in Tenzin Wangyal Rinpoche's book on dream yoga one form of meditation is watching emotions come and go without reacting to them essentially liberating those karmic seeds or reactions and this is not just a practice to do in seated meditation. You can do this throughout every situation in life, I also feel like when you leave your meditation that state of mind can be carried over throughout the day though to a lesser degree and I feel like keeping that state of mind throughout the day is also a form of meditation. I feel like you can use every moment to further yourself in your practice hence why I say life is a meditation. I guess if you always take it in the strictest Tibetan sense then life is not a meditation but I was using it in a looser way. I also feel if you look at the first sentence of the wiki definition this supports life being a meditation (if you make it that way) as it defines meditation as a discipline by which you exit the thinking reflexive state of mind and go into a state of more spacious deep awareness, which I attempt to do throughout every situation in life so I feel like I never leave meditation.
Certainly the wikipedia definition of meditation is much broader than what I was using, specifically because its broad enough to encompass 'meditation' across all traditions.
The reason I feel that a distinction between meditation and post-meditation is important is because if one believes that all of life is meditation and that you never leave it, it probably means you also feel no need for formal sitting meditation -- afterall you think you are doing it all the time.
There are significant advantages to formal sitting meditation. For one thing, you are literally only doing that. When you are at work, driving a car, etc etc, you are not literally just trying to enter samadhi or single pointed concentration.
Certainly the longer term goals are to have a 'spacious deep awareness' as you put it, all the time. However, this is a relatively advanced stage, I would be careful not to confuse your idea of what those words mean with what Geshe Tenzin Wangyal means.
Geshe Tenzin Wangyal is a Bonpo, a follower of Bon. When hes talking about that kind of 'transformation meditation', hes talking about a skill gained through years of formal tantric meditation practice. Dream yoga is considered a 'completion stage' practice, and is not something that one can really simply jump into, it involves a relatively high degree of achievement already.
Often times when one reads texts it is common to confuse someones descriptions after years of practice with the practice itself. I am not of course in a position to judge you personally. My point in all this is simply this: although meditation certainly plays a role in your entire life, having actual set aside periods of time for formal meditation is extremely important -- especially if you are following a contemplative tradition such as Buddhism or Bon.